Detachable-end bailer



F. B. ALLDREDGE.

DETACHABLE END BMLER.

APPIICATION FILED OCT. 18,1920.

1,. "",.89,O23 Patented Aug. 30, 1921.

mm AMAMAA `uNnEo STATES PATENT OFFICE.

FRANCIS iB. ALLDRCEKDGE, 0F DES MOINES, IOWA.

DETAcHABLE-END BAILER.

Applicatonrled October 18, 1.920.. Serial No. 417,791.

To all whom it may concern: l

ABe it known that I, FRANoIs- B. ALLDREDGE, a citizen of the United States, and a resident of Des Moines, in the county of Polk and State of Iowa., have invented a certain new and useful Detachable-End Bailer, of which the following is aspecification.

The object of my invention is to provide a detachable end bailer of simple and inexpensive construction. f

In hailing the water, sand and other material from" deep holes, such as oil and gas wells, it is common to use a compara-tively long, deep bailer of relatively small diameter and great difiicultyV has been Vexperienced incleaning out the bailer when mud, sand and stonesfill up the lower part of the bailer and settle there during the drawing `of the bailer from the hole.

It isfmy object to obviate thediiiculty just mentioned by providingabailer, having .a lower end, which is readily detachable,

and yet which can be'used in the ordinaryl Vway with the ordinary machinery for re-` v movingfwater, sand and stones "from'such a hole. Y

With these and other objects in view, my invention consists Fin the construction, ar-

Y rangement and combinationfof the various in s, in which:

partsofmy device, whereby the objectscontemplated are attained, `as hereinatfer more fully set forth, pointed out in my claims, and'illustrated in the accompanying drawf *igurel l1 shows aside elevation of a bailer, embodying my invention, parts being broken away and parts being shown in section,l the bailer body and the-detachable lower end being shown separated and in their positions justbefore beingunited.- v ,Y

Fig. 2 shows aV vertical, central, sectional view through the lower part ofthe bailer, after the body andthe bottomV have been connected together. *l

Fig. 3 shows a horizontal, detail, sectional View taken on the line 3-3 .of Fig. 2.

FigA; shows a detail, sectional View taken on rthe lingey L1 -4 ofyFig2; and Y Fig. 5 shows a vertical, sectional view taken'V on the line 5--5` ofFig. 2; Y y

In drilling oil andA gas wells and' similar deep' holes, t'S WellPkIlOWIrthet after Certain "rths .are nach@ 110W" an the 'hole and Merritt; it m11 sans' The rock in the hole is crushed orv brokenv upwith the d'rill: and water is then poured into the hole, so that the stone may be taken out kwith the Water by means of the bailer. T he bailer is sometimes from thirty to forty feet long. e

Ther bailer is lowered into the hole, filled through the bottom and 'then pulled out. Frequently mud,sand and small ystones col* lect in the-bottom of the bailer, and when the bailer Ais withdrawn from the hole, it is a'mcatt'e'rof considerable diiliculty to remove the more or less solid contents at the bottom of the bailer. It is sometimes necessary-to invert this long bailer and jar it and pound it to'remove it'scontents; A

To obviate the difficulty i of Asuch removal a'nd'to facilitate 'the speed with which such removal can be accomplished,I have 4provided a bailer with fa removable bottom.

My invention may be embodied in a conf siderable variety of forms. In the particu-v lar form illustrated my drawings, -which accompany this application, I have used the reference numeral 10 to indicate generally 'the body of the bailer, having the form of a cylinder.

At the lower endof the body 10, there is provided a reduced portion'll, whichmay be made integral with the body 10 or may be in the form of a sleeve orthelike welded or otherwise secured tothe body 10, y

The detachable bottom of my bailer comprises a .cylindrical member 12, having a bottom'provided with a flap valve 13, having a` downwardly projecting member ,'14, which 'is of.ordinaryjconstruction, and in itself formsfno part of my invention. The detachable bottom member 12 is provided on itsrinterior with inwardly. projecting' lugs 15.- In the particular -form ,ofmy device herein illustrated, I have shown three of the lugs 15 arranged `at the same `height and spacedl equi-distantly 'around the bottom 'm'ember'l The shape of the lugs 15, as'

nwed'ifrem the .insidgtoftbe 'bailer bottom @deinem-ata? @firewalls .11.2- Flg In the upper edge of the bottom member 12 is a notch 17 above each lug 15. In the re- -v duced portion 11 `are formed grooves-or channels 18 open at their lower ends at the lower edge of the reduced portion `11, preferably formed by pressing the wall `of the portion 11 inwardly. nels or grooves 18 are then machined out, so that said grooves orchannels are wider at their bottoms that at their outer portions.

Slidably mounted in each channel 18 isa key 19, having at its upper end, a horizontal flange or lip 20, projecting outwardly from between the walls of the' channel 18.

Thelower portion of each key 19 is beveled at one side, as at 21, to correspond to the beveled end 16 of the lug 15, for apurpose which will be hereinafter more fully eX- plained. l n y The channels 18 and thebody of the portion 11 are provided at points spaced up- `wardly from the lower edge of the portion 11 with slots 22, which are inclined from the horizontal, and are designed to receive the lugs 15, when the bailer body and the detachable bottom member are connected 'together. A 'f Assuming, that the partsare, completed and assembled, exceptingfor the connecting of the bailer body and the removable bottom, and assuming that the keys 19 are at the upper positions of their movement, I

.will now described the method of connecting the removable bottom 12 with the body of the bailer. y y j It will, of course, be understood that ythe keys 19 slide iongaudimnyof the bauer. in the channels 18. The thickness of the` walls of the bottom member 12 is preferably the same as the thickness of the walls of the bailer body 10, and the outside diameters of the bottom member and the bailer body are the same. Y

The external diameter of the reduced portion 11 is suchY that the portion 11 may ,be snugly inserted into the upper portion lof the lremovable bottom member 12. The

removable bottom member 12 is slidover the reduced portion 11 with a movement longitudinal of the bailer and with the lugs 15 sliding in the channels 18. When the lugs 15 reach the notches or slots 22, the bottom member 12 is rotated with relation to the body 10 for'causing the lugs 15 to slide into the slots 22.

It will be understood inthis-connection that ythe slots 22 are of such size, as to snugly receive the lugs 15, and it will be noted that the rotation of the bottom member with relation to the body of the bailer The side walls ofthe chan` for sliding the lugs 15 into the slots 22 will 'cause the bottom 12 to be slid longitudinally somewhat with relation to the body of the bailer on account :of the inclined shape of theslots 22 and the lugs 15.

vI' preferably provide a gasket 23 at the upper end of the bottom 12 and between such upper end and the shoulder formed at the lower end `of Vthebody portion 10, as illustrated `forinstance in Fig. 2. Such shoulder and the upper end of the member 12 or either of them are .preferably beveled or grooved, so that the gasket 23 may be received and practically hidden, when the members 12 and 10 are forced together.

After the bottom member 12 has been rotated a suicient distancerto permit the downward movement of the keys 19, such keys are forced downwardly with their beveled edges 21 vvin engagement with the ,beveled edges 16 of the lugs, and it will be seen that the forcing of the keys downwardly will force the lugs 15 farther into the slots 22, and will, of course, on account of the peculiar shapes of the slots-22 and lugs 15 tighten'the joint at the gasket between the bot`tomj12A and the body 10. of the bailer.

In this connection it'may be mentioned, that during such downward sliding movement of the keys 19, the flanges 2O enter the slots 'h It should perhaps be mentioned that `the slots 17 are of sufficient Width togpermit the proper rotation of the bottom r12 with, relation to the body of the bailer when the ke s 19 are traveling downwardly and afterV t e ianges 20 have enteredthe notches 17.

lVhenfthe keys 19 are thus in their lower positions, a tight joint will vhave been made` between the bailer body and the removable bottom, and such tight joint can be maintained` after considerable wear on the parts on account of the use of the beveled faces, hereinbefore described. l

The bailer when completed has a smooth outside edge, so that it may be dropped into the hole and removedV therefrom in the same way,"as an vordinary bailer.

YWhen the bailer` isin use. and has been drawn full from the oil or gas well or the like, it may be emptied inthe ordinary way. i If,however,1dirt, mud, Sandor stones might` havev collected, in the bottom of the bailer,

, until it is dilcult to remove them, the keys 19 may begforced upwardly by Vusing any suitable kinstrument for driving the fianges 20 upwardly, and after the lower portions of the keys have clearedthe lugs 15, the bottom 12 may be rotated withfa motion the reverse of its rotary movement vhereinbefore described, until the Vlugs 15 slide out of the slots 22, whereupon the removable bottom'12 may be pulled] off the body of the bailer, and themore or less Solid contents of the bailer may then be easily ref moved. After this, the bailer parts may be again connected inthe manner hereinbefore described.

It will, of course, be obvious that many changes may be made in the details of the construction of my improved detachable end bailer. The side Walls of the channels 18 rnear the slots 22 may be reinforced by Welding material thereto, as at 24. The locking device may be varied in quite a number of particulars, and in general I recognize the possibility of varying I)the details of my construction, and it is my purpose to cover by the claims hereinafter set forth, any such kmodifications of structure or use ofv mechanical equivalents, as may be reasonably included Within the scope of such claims.

I claim as my invention:

1. A detachable end bailer, comprising a bailer body, a bailer bottom member having an open end and a valve controlled end, a reduced member on said body adapted to be inserted Within the open end of the bottom mem-ber, having open-ended channels formed therein, the Walls of said channels and the Walls of said reduced portion having inclined slots, inclined lugs on the interior of said bottom member adapted to slidably enter said channels and to enter said slots when the bottom member is rotated With relation to said body, and beveledkeysslidably received Within said channels, said lugs having beveled edges for coacting with said keys. Y

2. In a detachable end bailer, a bailer member, apsecond bailer member, a reduced portion on one of said members, having open-ended channels, and having inclined slots extending from said channels into the Wall of said portion, the other of said members having on its interior beveled surfaces for coacting With said inclined slots and with keys and keys slidably mounted in said channels, having beveled faces for coacting With said lugs.

3. In a detachable end bailer, a bailer member, a second bailer member, a reduced portion on one of said members, having open-ended channels, and having inclined slotsextending from said channels into the Wall of said portion, the other of said members having on its interior beveled surfaces for coacting with said inclined slots and With keys, keys slidably mounted in said channels, having beveled faces for coacting wvith said lugs, and a gasket received between said members and adapted to be gripped when one of said mem-bers is rotated with relation to the other for forcing said lugs into said slots.

Des Moines, Iowa, September 8, 1920.

FRANCIS B. ALLDREDG-E. 

